Cement-kiln.



EATENTED sEPT.15, 190s.. s. E. MALoNE.

CEMENT KILN.

APPLICATION FILED ABB.- 28,@903.

2 SHETS-SHEET Z.

N0 MODEL.

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W/TNESSES' A rma/Veys.

I UNITED STATES Patented September 15, 1903.

`PATENT OFFICE.

SAMUEL R. MALONE, OF QUANAH, TEXAS, ASSIGNOR OF ONE-HALF TO JOHN E. LEDBETTER, OF QUANAH, TEXAS.

CEMENT-mm.

SPECIFICATION forming part of Letters Patent No. 739,196, dated September 15, 1903.

Application inea April 28,1903;

To @ZZ whom, it may concern.-

Be it'known that I, SAMUEL R. MALONE, a

citizen of the United States, and a resident' struction and arrangement of parts, which will be hereinafter fully described, and the novel features pointed out in the subjoined claims.

In order to enable others to make and use my invention, I will now proceed to describe it in detail with reference to the accompanying drawings, forming a part of this speciiication.

In the drawings, Figure 1 is a perspective view illustrating my invention. Fig. 2 is a plan view with the upper members of the ovens removed. Fig. 3 is a plan view of the furnace with the ovens removed. Fig. 4 is an end view ofthe same. Fig. 5 is a vertical sectional view taken on line 5 5 of Fig. 1. Fig. 6 is a transverse sectional view taken on line y y of Fig. 5, and Fig. 7 illustrates detail perspective views showing the lower and upper oven members.A

In carrying out my invention I employ two elongated conveying-ovensA A' and provide the former with an extension A2. The ovens are made communicating at one end by a tubular passage B, the oven A' being provided with an exit-spout B'. The extension A2 of the oven A is the feed end, into which gypsum or other material being dried is placed. I construct the ovens A A' in two parts, consisting of lower and upper members C C', formed by elongated troughs D, having side iianges D', with bolt-holes adapting them to be bolted together, as shown.

E denotes end closures for the ovens,formed in two parts and provided with suitable openings adapted to receive and serve as bearings for shafts or projecting endsv of screw conveyers F F', arranged in the ovens. The con- Vbers C O' of the ovens.

Serial Nor 154,638. (No model.) y

veyers F F' are connected by suitable gearing Gr at one end and the longer conveyer F provided with a band pulley or gear G', as shown, through which the conveyers receive motion derived from any suitable source of power. It will be noticed that bothmembers C O' of the oven A' have end flanges H and that one end of the members forming the oven Alias similar iianges; also, that the extension A2 or feed end of the oven A is closed by a plate H', forming suitable bearing for this end of the eonveyer F. It will be further noticed that the closures E are bolted to the flanges H of the lower and upper mem- According to my invention the ovens A A' are arranged upon a suitable brick-furnace I, having a centrallylocated longitudinal wall I and two transverse inner walls J, which with the side and `end walls of the Jfurnace form end compartments K K and middle compartments L L. The end compartments K K are provided with grates M M and doors N Nand are made communicating with the compartments L L through suitable openings J' in the walls J. The end compartments K are adapted as fireboxes, in which coal, oil, orl other fuel may be burned for heating the ovens A A'. The middle compartments serve as combustionchambers and also for common passage .from the tire-boxes at the end of the furnace, leading through an opening O to a centrally-located stack: P, projecting upwardly from a .point between the ovens A A', as shown.

In further carrying out'my invention I arrange a thermometer P' in the tubular passage B, connecting the two ovens. The exit- IOO the oven A and tubular passage B to the oven A. The conveyer F in the latter oven forces the material along to the exit-spout B.

- Special advantages and improved results are gained with a kiln constructed as invented by me and to which I will in part refer. Vith the two ovens arranged and made communicating, as done by me, much space is saved in an equal transit of the material. In treating very wet gypsum both of the end fire-boxes are used to advantage. With less wet gypsum or other material the fire-boxes at one end of the furnace will provide adequate heat. Thermometers located according to my invention in the connecting or tubularpassage B and exits B B3 facilitate testing ofthe material being treated at any time and whereby the necessity for more or less heat may be determined.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination in a kiln of the character described, of twin ovens arranged side by side in horizontal plane, one oven being extended and provided with a feed-hopper as specified, tubular communication between the said ovens, at their far ends from the feed-hopper, an exit-spout at the eXit end of the shorter oven, force feeding means in the said ovens, a thermometer in the tubular communication between the ovens and also in the exit-spout, and a furnace adapted to support and heat the ovens, substantially as described. Y

2. The combination in a kiln ot' the charac-- ter described, of twin ovens arranged side by side and in horizontal plane, one oven being the longer and provided with a feed-hopper at its extended end, tubular communication between the said ovens at their far ends from the feed-hopper, an exit-spout at the exit end of the shorter oven, athermometer in the said tubular communication between the ovens and also in the said exit-spout, force feeding means in the ovens, and a furnace adapted to support and heat the ovens, having a plurality of fire-boxes with a common smoke-uptake, substantially as described.

3. The combination in a kiln of the character described, of twin ovens arranged side by side and in horizontal plane, one oven being the longer and provided with a feed-hopper at its extended end, tubular communication between the said ovens at their far ends from the food-hopper, an exit-spout at the exit end of the shorter oven, means whereby the material being treated may be tested in its transit from the feed -hopper to the exit-spout, force feeding means in the said ovens,a steamcXit spout at the communicating end of the longer oven, and a furnace adapted to support and heat the ovens, having a plurality of hre-boxes with a common smoke-uptake, substantially as described.

4. The combination in a kiln of the character described,employing connected twin ovens with force feed, inlet and exit openings, and also thermometers located along the transit of the material being treated, of a supportingfurnace constructed with an inner longitudinal wall and two inner transverse walls, a centrally-located smoke-stack, and openings in the said longitudinal and transverse Walls, providing combustion-passage to the said smoke-stack, substantially as described.

SAMUEL R. MALONE.

IVitnesses J. H. WHITESIDE, S. E. MOORE. 

